<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品分类</el-breadcrumb-item>
    </el-breadcrumb>


    <el-card>
      <el-row>
        <el-col>
          <el-button type="primary" @click="showAddCateDialog">添加商品分类</el-button>
        </el-col>
      </el-row>

      <!--表格-->
      <tree-table class="treeTable" :data="catelist" :columns="columns"
                  :selection-type="false" :expand-type="false" show-index border :show-row-hover="false">
        <!--是否有效-->
        <template slot="isok" slot-scope="scope">
          <i class="el-icon-success" v-if="scope.row.cat_deleted===false" style="color:lightgreen"></i>
          <i class="el-icon-error" style="color:lightgreen" v-else></i>
        </template>
        <!--排序-->
        <template slot="order" slot-scope="scope">
          <el-tag size="mimi" v-if="scope.row.cat_level===0">一级</el-tag>
          <el-tag type="success" size="mimi" v-else-if="scope.row.cat_level===1">二级</el-tag>
          <el-tag type="warning" size="mimi" v-else>三级</el-tag>
        </template>
        <!--操作-->
        <template slot="opt" slot-scope="scope">
          <el-button type="primary" icon="el-icon-edit" size="mini">编辑</el-button>
          <el-button type="danger" icon="el-icon-delete" size="mini">删除</el-button>
        </template>

      </tree-table>


      <!--分页-->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>

    </el-card>
    <el-dialog
      title="添加分类"
      :visible.sync="addCateDialogVisible"
      width="50%" @close="addCateDialogClose">
      <!--添加分类的表单-->
      <el-form :model="addCateForm" :rules="addCateFormRules" ref="addCateFormRef" label-width="100px">
        <el-form-item label="分类名称" prop="cat_name">
          <el-input v-model="addCateForm.cat_name"></el-input>
        </el-form-item>
        <el-form-item label="父级分类">
          <el-cascader
            v-model="selectKeys"
            expand-trigger="hover"
            :options="parentCateList"
            :props="cascaderProps"
            @change="parentsCateChange" clearable change-on-select></el-cascader>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
    <el-button @click="addCateDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addCate">确 定</el-button>
  </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: "Cate",
  data() {
    return {
      //查询条件
      queryInfo: {
        type: 3,
        pagenum: 1,
        pagesize: 5
      },
      //商品分类的数据列表
      catelist: [],
      total: 0,
      columns: [{
        label: '分类名称',
        prop: 'cat_name'
      }, {
        //当前定义为模板列
        label: '是否有效',
        type: 'template',
        template: 'isok'
      }, {
        //当前列的排序
        label: '排序',
        type: 'template',
        template: 'order'
      }, {
        //当前列的排序
        label: '操作',
        type: 'template',
        template: 'opt'
      }
      ],
      //控制分类框的显示与隐藏
      addCateDialogVisible:false,
      addCateForm:{
        cat_name:'',
        cat_pid:0,
        cat_level:0
      },
      addCateFormRules:{
        cat_name:[
          {required:true,message:"请输入分类的名称",trigger:'blur'},
          {required: true,min:2,max:3,trigger:'blur'}
        ]
      },
      parentCateList:[],
      cascaderProps:{
        value:'cat_id',
        children:'children',
        label:'cat_name'
      },
      selectKeys:[]

    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    async getCateList() {
      const {data: res} = await this.$http.get('categories', {params: this.queryInfo})
      if (res.meta.status !== 200) {
        this.$message.error('获取商品分类失败')
      } else {
        this.catelist = res.data.result
        console.log(res.data)
        this.total = res.data.total
      }
    },
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getCateList()
    },
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getCateList()
    },
    showAddCateDialog(){
      //现获取父级数据列表
      this.getParentCateList()
      this.addCateDialogVisible=true
    },
    async getParentCateList() {
      const {data:res}=await this.$http.get('categories',{params:{type:2}})
       if(res.meta.status===200){
        // console.log(res.data)
         this.parentCateList=res.data
       }else{
         this.$message.error(res.meta.msg)
       }
    },
    parentsCateChange(){
      console.log(this.selectKeys);
      if(this.selectKeys.length>0){
        this.addCateForm.cat_pid=this.selectKeys[this.selectKeys.length-1]
        this.addCateForm.cate_level=this.selectKeys.length
        return
      }else{
        this.addCateForm.cate_pid=0
        this.addCateForm.cate_level=0
      }

    },
     addCate(){
      console.log(this.addCateForm)
      this.$refs.addCateFormRef.validate(async (valid)=>{
        if(valid){
          const {data:res}=await this.$http.post('categories',this.addCateForm)
          console.log(res)
          if(res.meta.status!==201){
            this.$message.error(res.meta.msg)
          }else{
            this.$message.success(res.meta.msg)
            this.getCateList()
          }
          this.addCateDialogVisible = false
        }else{
          this.$message.error("验证失败")
          return
        }

      })

    },
    addCateDialogClose(){
      this.$refs.addCateFormRef.resetFields()
      this.selectKeys=[]
      this.addCateForm.cat_pid=0
      this.addCateForm.cate_level=0
    }
  }
}
</script>

<style less="lang" scoped>
.treeTable {
  margin-top: 15px;
}

.el-cascader {
  width: 100%;
}
</style>
